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arXiv · 0906.0592

Correlation-dependent coherent to incoherent transitions in resonant energy transfer dynamics

Ahsan Nazir
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Abstract

I investigate energy transfer in a donor-acceptor pair beyond weak system-bath coupling. I identify a transition from coherent to incoherent dynamics with increasing temperature, due to multi-phonon effects not captured by a standard weak-coupling treatment. The crossover temperature has a marked dependence on the degree of spatial correlation between fluctuations experienced at the two system sites. For strong correlations, this leads to the possibility of coherence surviving into a high temperature regime.

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Ahsan Nazir. 2009-10-05. Correlation-dependent coherent to incoherent transitions in resonant energy transfer dynamics. https://doi.org/10.1103/physrevlett.103.146404

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